残留 cánliú to remain
to remain; to be left over; residual; remnant; residue
How to remember 残留: 残 to injure + 留 remain = to remain.
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How it is used
- 'To remain, leave a residue' - 农药残留 (nóngyào cánliú) pesticide residue.
- Refers to leftover traces of a substance after most is gone.
- Technical/everyday; 残留物 (cánliúwù) residue, remnant.